Automatic shearing-machine.



E. BROWN & S. H. MARTIN.

AUTOMATIC SHEARING MACHINE.

APPLICATION IILED MAR.23, 19111 1,009,028. Patented N0v.14,1911.

Z SHEBT8SHEET 1.

E. BROWN & s. 11. MARTIN. AUTOMATIC SHEARING MACHINE.

APPLICATION FILED MAILZS, 1911.

1,009,028. Patented Nov. 14, 1911.

Z BHEBTB -BHEET 2.

COLUMBIA PLANOGRAPH couivnsumaroN, D. c.

UNITED STATES PATENT orro.

EDWARD BROWN AND SAMUEL HERBERT MARTIN, OF TORONTO, ONTARIO, CANADA,ASSIGNORS TO THE MARTIN CORRUGATED PAPER AND BOX COMPANY, LIMITED, OFTORONTO, CANADA, A CORPORATION.

AUTOMATIC SHEARING-MACHINE.

To all whom it may concern:

Be it known that we, EDWARD BROWN and SAMUEL HERBERT MARTIN, both of thecity of Toronto, in the county of York, in the Province of Ontario,Canada, have, invented certain new and useful Improvements in AutomaticShearing-Machines, of which the following is the specification.

Our invention relates to improvements in automatic shearing machines andthe object of the invention is to devise a machine of this class inwhich paper or cardboard as it passes through the machine may be cut offinto desired lengths without stopping or slowing the machine feed and itconsistsessentially of a feeding table provided with a ledger plate anda delivery table suitably supported, a shearing knife and means forimparting a combined downward and longi tudinal movement to the knife soas to impart to the knife a longitudinal draw, a gage device, a clutchoperated by the gage device designed to be thrown in by the contact ofthe card with the gage thereby throwing in the knife operating mechanismas hereinafter more particularly described by the followingspecification.

Figure 1, is a general perspective view of our device. Fig. 2, is alongitudinal section through Fig. 1. Fig. 3, is a cross section.

In the drawings like letters of reference indicate corresponding partsin each figure.

A is the main frame provided with standards A having vertical slots A Bis a longitudinal ledger bar and B is a ledger plate secured thereto.

D is a receiving table.

E is the delivery table having a central longitudinal slot E.

A is a cross bar connecting the top standards A A together.

, F and F are links swung upon the cross bolts F extending through thestandards A A and the slots A G is a shearing knife provided withbearing brackets G and G to which the links F and F are pivotallyconnected by the cross pins H and H. It will be noticed on referringparticularly to Fig. 3 of the drawings that the bracket G is slightlylower than the bracket G thereby imparting a slightly inclined set tothe shearing knife in relation to the ledger plate B.

I is a series of spiral tension springs Specification of Letters Patent.

Applicationfiled March 23, 1911.

shaft J, and K Patented Nov. 14, 1911. Serial No. 616,495.

connecting the knife G with the cross bar A The tension springs serve tocounterbalance the weight of the knife on its return or upward movement.

J is the main driving shaft journaled in suitable bearings J andprovided with a driving pulley J J 3 is the operating arm of a clutchdesigned to throw the driving pulley J 2 into and out of engagement withthe shaft J. We do not show the construction of this clutch as anysuitable form may be used for this purpose.

K is a crank wheel mounted upon the is the link connecting the crank pinK of the crank wheel K to the cross pin K extending through the end ofthe knife G.

L is a lever pivotally secured at one end to the main frame of themachine.

L is a link connecting the opposite end of the lever L with the clutcharm J M is the main gage bar adjustably connected to the delivery tableby set screws M.

M are lugs forming part of the gage bar and provided with holes M M is asupplemental gage bar provided with end brackets M slidably supported onthe edge of the table E.

M are stems extending rearwardly from the gage bar M through the hole Mof the main gage bar M.

M are compression springs surrounding the stems M downward between thelugs M and the brackets M M is a central depending socket forming partof the supplemental gage bar M*.

N is a rod extending through the socket M at one end and adj ustablysecured therein by the set screw M.

N 2 is a link connecting the opposite end of the bar with the lever L.

Having described the principal parts involved in our device we will nowdescribe the operation of the same. The card or paper is fed in a striponto the receiving table from which it is fed by suitable means over theledger plate onto the delivery table until the edge of the card strikesthe gage bar M thereby compressing the springs M allowing the gage bar Mto recede. This movement of the gage bar M draws the bar Nlongitudinally and swings the lever L on its fulcrum. This motion of thelever L pulls over the clutch arm J thereby throwing in the clutch andconnecting the pulley J 2 to the shaft J. The crank wheel K then forcesthe link K and knife bar G longitudinally the links F and F carrying thebar downwardly imparting to the knife a downward and longitudinal drawco-acting with the ledger plate to quickly sever the card. The continuedmotion of the crank wheel serves with the aid of the compression springsI to quickly withdraw the knife out of the path of the card therebypreventing the knife interfering with the continuous feed of the card orpaper in the shearing machine.

From this description it will be seen that we have devised a very simplemachine whereby card or paper may be cut into any desired lengthswithout stopping or slowing the feeding of the paper there into.

What we claim as our invention is,

1. In an automatic shearing machine, the combination with the ledgerplate, of a swingably supported knife bar and means for imparting alongitudinal movement to the knife bar, of a delivery table, a gagedevice supported on the delivery table, a clutch arm and means foroperating the clutch arm to throw in the knife operating mechanism bythe contact of the card with the gage device, as and for the purposespecified.

2. In an automatic shearing machine, the

Copies of this patent may be obtained for combination with the maindriving shaft and the clutch arm designed to throw the same in and outof gear, of a delivery table, 7

a gage device comprising a stationary bar 'adjustably secured to thetable, a supplemental gage bar, compressible means between thesupplemental gage bar and the stationary bar, and connecting meansbetween the supplemental gage bar and the clutch arm, as and for thepurpose specified. 3. In an automatic shearing machine, the

combination with the main driving shaft and driving pulley, and a clutcharm for throwing the driving shaft into connection with the drivingpulley, of a delivery table, a gage bar adjustably secured to thedelivery table, a supplemental gage bar provided with stems extendingslidably through the first mentioned gage bar, springs surrounding thestems and extending between the supplemental and first mentioned gagebars, a lever pivotally connected with the frame at one end, a linkconnecting the opposite end of the lever to the clutch arm, and a linkbar connecting the supplemental gage bar to the lever, as and for thepurpose specified.

EDWVARD BROWN.

SAMUEL HERBERT MARTIV.

WVitnesses:

B. BOYD, I-I. PRESTON.

five cents each, by addressing the Commissioner of Patents, Washington,I). O.

